Combine all ingredients EXCEPT � cup sugar and 1 � tsp almond extract in a large bowl and mix well. Pour into unbaked pie crusts and bake at 400� for 15 minutes. Reduce heat to 350� and bake 30 minutes more or until a knife inserted at the middle comes out clean. Beat egg whites until stiff gradually adding � cup sugar and 1� tsps almond extract. Top pies and return to 400� oven and cook until lightly brown.